My players came across a ghost last session. On its turn, the ghost used its Horrifying Visage ability. Horrifying Visage states:
Each non-undead creature within 60 feet of the ghost that can see it must succeed on a DC 13 Wisdom saving throw or be frightened for 1 minute. If the save fails by 5 or more, the target also ages 1d4 × 10 years. A frightened target can repeat the saving throw at the end of each of its turns, ending the frightened condition on itself on a success.
One PC failed the saving throw by 5 or more (his save was 7 after all modifiers) and so was aged 10 years (I rolled a 1 on the d4).
The party mopped up the ghost pretty quickly thereafter, and everybody who failed the first save made the second. After the game, one of the other players commented that aged character was lucky to have made his second save, since he would've been aged again had he failed it so badly a second time.
Is this actually the case? If a character fails a repeat saving throw against Horrifying Visage by 5 or more, will they be aged just as if they had failed the initial saving throw by 5 or more?